AC Current Sensing Switch 0.2A–30A Induction Relay M3050

M3050 AC Current Sensing Switch — Precise Monitoring & Automatic Control

Upgrade your electrical monitoring and control system with the M3050 AC Current Sensing Switch. Designed for industrial and commercial applications, this compact induction relay delivers precise AC current detection (0.2A–30A) and reliable switching performance — all in a durable ABS housing.

Key Features

• Wide Detection Range: Accurately monitors AC currents from 0.2A to 30A, making it suitable for a broad range of loads and equipment.
• Non-Contact Current Measurement: Built-in mutual inductor (CT) structure clamps around the conductor — no need to break the circuit for safe, stable operation.
• NO & NC Contact Options: Supports both Normally Open (NO) and Normally Close (NC) switching modes for flexible integration into any control logic.
• High Sensitivity & Fast Response: Quickly detects changes in current status to help prevent equipment damage caused by overcurrent or load failure.
• Compatible Models: Available in M3050 and M3056 specifications to suit different project requirements.
• Easy Wiring & Compact Design: Snap-on installation makes it fast to integrate into distribution boxes, control cabinets, and automation panels.
• Durable Construction: ABS material body built for continuous operation in demanding environments.

Ideal Applications

• Pump systems & motor protection circuits
• HVAC equipment monitoring
• Lighting control automation
• Distribution boxes & control cabinets
• Overload protection & current monitoring systems
• Industrial & commercial automation projects

Product Specifications

Package Contents

• 1× AC Current Sensing Switch (M3050 or M3056)

Note: Only the above package content is included. Other products shown in lifestyle images are not included. Colors may vary slightly due to lighting and display settings. Measurement tolerance: ±1–3 cm.

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Frequently Asked Questions

Q: What is an AC current sensing switch and how does the M3050 work?

A: An AC current sensing switch is a relay-based device that monitors the flow of alternating current through a wire and automatically triggers a switching action (NO or NC) when the current exceeds or falls below a set threshold. The M3050 uses a built-in mutual inductor (current transformer) that clamps around a conductor — no circuit interruption required — making it a safe, non-contact solution for current monitoring and automatic control.

Q: What is the detection range of this current sensing switch?

A: The M3050 AC current sensing switch has a detection range of 0.2A to 30A, covering most common single-phase and control circuit loads used in industrial, commercial, and automation applications.

Q: Can this induction relay be used with both NO and NC circuits?

A: Yes. The M3050 supports both Normally Open (NO) and Normally Closed (NC) contact configurations, giving you the flexibility to integrate it into a wide variety of automation, protection, and monitoring control logic schemes.

Q: What types of equipment is this current sensing switch compatible with?

A: The M3050 is well-suited for use with pump systems, motor protection circuits, HVAC equipment, lighting control panels, distribution boxes, and general industrial automation setups where real-time current status feedback is needed.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.